Construcciones y Auxiliar de Ferrocarriles designs, manufactures, maintains, and supplies equipment and components for rail systems worldwide. It offers rolling stock products for high speed trains, regional trains, commuter trains, metros, lrvs and tram-trains, trams and light metros, and locomotives. The Company also provides equipment and components, such as wheel sets, wheels, axles, gear units, and couplers, as well as after-sales services, including technological advice and inspection guidelines, traction systems and converters, energy storage systems, and control and communication systems, European rail traffic management systems, electronic interlocking products, and integrated control centers. It is also involved in the provision of maintenance, refurbishment and upgrading services, workshop equipment and auxiliary vehicles, vehicle after-sales services, as well as turnkey management of materials.